Cutting off and reaming attachment for threading machines and the like



June 19, 1928.

L. s. HALL.

, CUTTING OFF AND REAMING ATTACHMENT FOR THREADING MACHINES AND'THE LIKE Original Filed Feb. 18, 1924 INVENTOR LESL/C fi flLL Y WATTQRNEY Patented June 19, 1928.

UNITED STATES v 1,673,979 PATENT OFFICE.

LESLIE S. HALL, OF ERIE, PENNSYLVANIA, ASSIGNOR- TOWILLIAMS TOOL CORPORA- TION; OF .ERI E,

CUTTING OFF AND BEAMING ATTACHMENT FOR THREADING MACHINES AND THE LIKE.

PENNSYLVANIA.

Original application filed February 18, 1924, Serial No. 693,604. Divided and this application filed March 25, 1925.

My invention relates to machinery and primarily toa cuttingoff and reaming attachment for that type of machine known as a pipe or bolt threading machine.

. The primary object of my inventionlies in the provision of a simple and efficient cutting on tool, the support of which also carries a rean'ier. a v

Another object is to provide a cutting off tool and an operating mechanism therefor, which is steady and positive in operation.

A further object lies in mounting this cutting 01f tool upon a pivoted arm movable to and from cutting positions by a screw threaded operating member.

A still further object lies in mounting upon this pivoted support for the cutting off tool, a pivot-ed hand operated reaming or chamfering tool, which by virtue of its position on the cuttingoff arm is always within ready access to the hand of the operator.

Another object is to provide means for the ready removal and insertion of the cutting off and reaming dies or tools.

Other objects and advantages in details of construction and operation will be apparent as the description proceeds, reference being had to the accompanying drawing wherein like reference numerals indicate like parts.

This. application is a division of my ap plication, filed February 18, 1924, Serial No. 693,604.

In the drawing:

Figure 1 is a side view of a thread cutting die or head for machines of the character described, showing a side elevation of my improved cutting oft" and reaming device mounted thereon.

Figure 2 is a rear view of the head showing clearly the construction and operation of my improved parts.

Figure 3 is a detail view of the reaming tool and its pivoted support.

A thread cutting head or die such as that disclosed and described in my parent application above referred to, is indicated generally by the reference numeral 1. This head comprises a supporting carriage 2, 50 whereby the head may be moved along the ways of the machine (not shown), and a rigid upstanding frame work 2 A rotatable ring 3 is journaled on this rigid support 2*, and controlled by the operating arm Serial No. 18,248.

1, provided with the locking handle 5 to provide for the moven'ientof'the chaser-s orthread cutting dies (not shown) contained w thin the head. This mechanisn'i is clearly shown and described in the parentapplication above'referred to. A front plate 6 secured to the structure by bolts 7 maintains the ring 3 in operative position. These various parts of the head 1, are'provided with an opening 8, shown in dotted lines in Figure 1, to receive the end of the pipe or other work to be threaded. This opening 8, as shown in Figure 2, extends completely through the head so that the pipe may be extended therethrough into operative position for engagement with the cutting off and reaming tools which are mounted on the ings and adjustably mounted thereon, as by the set screw 14, is an arm 15, for rocking movement to and from the openmg 8 whereby the cutting, off tool 16 carried by said arm 15 may be brought into and out of engagement with the protruding section of pipe or work to be cut off. A clamping plate 17 held in posit-ion by the lock nut 18, secured the cutting off tool 16 in proper posit-ion.

The arm 15 is provided near its top with an outstanding bearing 19 preferably cast with the arm 15. A pintle or bolt 20 extending through this bearing forms a pivot for one end of the laterally movable arm or lever 21. .This lever 21 carries a reaming or chamfering tool 22, secured in position by means of the lockbolt and nut 23 and the clamping plate 2 1. i

It will be understood therefore that by this arrangement, the reaming or chamfering tool may be swung by hand into or out of.

engagement with the end of the pipe or work extending through the aperture or opening 8.

Novel means are provided for swinging the supporting arm 15 intoand out of work engaging position. Pivoted at 25, near one edge of the supporting structure 2, as by means of the barrel 26, is a screw threaded shaft 27 provided at its outer end with an operating handle 01' wheel 28, whereby said shattmay be rotated. The inner end of the shaft 27 extends through an internally threaded rotatable barrel 29, carried by the arm 15. The barrels 26 and 29 being rotatable in suitable bearings serve to compensate for the varying distances between the pivot points 13, 25 and 29 as the arm is run in or out on the pivot 13. It will be understood that rotation of the screw threaded shaftv 27 through the medium of the hand wheel :38, will through the engagement of said shalt with the screw threaded barrel 29 cause such rocking movement of the arm 15 depending upon the direction of rotation of the hand wheel 28, thus bringing the cut ting and reaming tools into or out of operative position.

Also mounted upon the rear of the supporting structure is a V shaped steadying block 3(), controlled by the screw 31 and hand wheelBZ. The )urpose of this element is to steady the end of the pipe for the cutting off and reaming operations and is not here described in detail inasmuch as it forms the subject matter 01" a separate divisional application.

The operation of my invention is as fol lows:A:fter the end of a section of pipe has been threaded in the head 1. the carriage i2 is moved along the ways of the machine a sullicient distance to permit the end of the pipe to extend through the opening 8 and protrude to the rear of the head into position where it may be engaged by the reaming and cutting ofl' tools. It the threaded section of the pipe or other work is to be cut off. then the operator rotates the hand wheel 28 which through its screw connection 29 with the arm 15 rocks said arm forwardly so that the cutting off tool 16 engages the pipe for the cutting ofi' operation. If the end of the pipe is to be reamed or ehamlered, the operator grasps the handle 21, rocking it laterally on its pivot 20 until the tool or hit 22 engages the end of the pipe as desired. Rotation of the hand wheel :38 in the opposite direction will rock the arm 15 away from the pipe whereby said pipe may be freely withdrawn from the machine.

Although I have illustrated and described my invention as pertaining and applied to a pipe threading machine, it. will be readily understood that this invention is susceptible to many and various uses in other kinds of machinery, such as bolts, cutters, lathes, etc. Flllblltilll'lOlG, although 1 have shown and described the preferred embodiment of my invention, it will be understood that the same is susceptible to many changes in details of construction and operation without departing from the spirit and scope of the inven tion. I do not limit myself therefore to the exact structure shown and described other than by the appended claims.

I claim: 1. In combination with a the head, a substantially vertical arm pivoted thereon,

means for adjusting the position of said arm, an integral bearing on said arm. a laterally extending lever pivoted in said bearing and carrying a reaming blade.

2. in combination with a die head, an arm pivoted thereon, a cutting blade. in the free end thereof, a bearing on said arm, and a reamer pivotally mounted in said bearing.

3. In. combination with a. die head, an arm pivoted thereon, a cutting blade in the free end thereof a bearing on said arm, and a reamer pivotally mounted in said bearing, said reamer being movable in a plane at right angles to the movement of said arm.

LESLIE S. HALL. 

